Did you take a closer look at that study? Discussed for example here: https://www.longecity.org/forum/top...h-epa-alone-is-best-omega-3-carboxylic-acids/ or here: https://www.longecity.org/forum/top...to-heart-rhythm-disorder-atrial-fibrillation/
It's been some while since I looked at it, but I also checked a simplified meta-review of various studies on Omega 3 and they found a signal that it's likely DHA that outweighs the EPA-mediated risk reduction. I'm not sure if I can find it again. I don't think it was a peer-reviewed paper. Are you sure that the EPA formula is patented? I thought it would be widely available. I use a product called Pharmepa Restore from igennus.